How to Calculate Flight Enroute Time

Filed Under (Flight Operations) by steven on 05-12-2009

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Yes, we only just fly a simulation but it does no harm if we learn how to calculate the enroute time that are very useful when we gonna fill the flight plan. Okay, here we will discuss how do we calculate our Flight EET (Estimated Enroute Time) to our destination. Thanks to Danang Pariadji who gives the formula.

First, we must determine the aircraft’s True Air Speed or TAS. There’s several ways to calculate the TAS, but i will only use two formula.

  • Take a half of your altitude and add it to your Indicated air speed. For example: 280 Knot IAS at FL350. Then 350 / 2 = 175 –> 280 + 175 = 455 Knot TAS.
  • Divide Your altitude by 1,000 and multiply by 5. And Add the outcome to your indicated air speed. For Example: 35,000 / 1,000 = 35 * 5 = 175. Then 175 + 280 = 455 Knot TAS.

Voila! Now we have our True Air Speed. Now here is the formula to calculate our Estimated Enroute Time…

(Range / TAS) * 60 + 20. For Example: We take place from WIII (Soekarno-Hatta Int’l Airport – Jakarta) to WARR (Juanda Int’l Airport – Surabaya). The distance between these two airport is: 375 nm, Our TAS is 455 at FL350. Now we have all required data…. So the calculation is: (375 / 455) *60 +20 = 69.45 minutes or 1 hour 10 minutes.

This time estimation will be influenced by many factors such as wind factors, etc. And of course it depends what type of aircraft that you will use. Example above is using Boeing 737 classic. And it’s for Simulation use only :)

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Sriwijaya Air Aerosim

Filed Under (Galleries) by steven on 14-09-2009

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Aerosim b732 Sriwijaya Air

Aerosim b732 Sriwijaya Air

My first Repaint..still learning..hehe..Using Aerosim b732ADV from Soekarno – Hatta  Jakarta to Adisutjipto Jogjakarta. Hope in the future Aerosim can make the panel more seriously. maybe like Tinmouse but with the Virtual Cockpit, and maybe with INS! wow, that would be great! Since i’m having trouble do the landing without VC so i used this boeing 737-200 by Aerosim which is the only 737-200 addon who has the VC. Well, this is my journey with my first repaint. Please feel free to leave a comment or constructive critics are very welcome. You also can get this texture in here

Enjoy!
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